<!--
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<!DOCTYPE html>
<html>
    <head>
        <title></title>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    </head>
    <body>
        <div>TODO write content</div>
        <script type="text/javascript">
            function f1(p1,p2) {
                //alert(arguments[0]);  //index从0开始
                //alert(arguments.length); //实际传进来的参数个数
                alert(f1.length);  //期望传递进来的参数个数
            }
            f1(1,2,3);
        </script>
    </body>
</html>
